package StackP;

import ArrayP.Array;

public class ArrayStack<E> implements Stack<E> {
    private Array<E> array;

    public ArrayStack(int capacity){
        array=new Array<>(capacity);
    }

    private ArrayStack(){
        array=new Array<>();
    }

    @Override
    public int getSize() {
        return array.getSize();
    }

    @Override
    public boolean isEmpty() {
        return array.isEmpty();
    }

    public int getCapactity(){
        return array.getCapacity();
    }
    @Override
    public void push(E e) {
        array.addLast(e);
    }

    @Override
    public E pop() {
        return array.removeLast();
    }

    @Override
    public E peek() {
        return array.getLast();
    }

    @Override
    public String toString(){
        StringBuffer res = new StringBuffer();
        res.append("StackP.Stack:");
        res.append('[');
        for (int i=0;i<array.getSize();i++){
            res.append(array.get(i));
            if(i!=array.getSize()-1){
                res.append(",");
            }
        }
        res.append("] top");
        return res.toString();
    }

}
